Mitsubishi Electric MELSEC-Q Series User Manual page 236

7 ONLINE MODULE CHANGE
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(2) Removing a module
(a) Select [Diagnosis] - [Online module change] from the menu of GX
Developer. Select "Online module change" under "Mode" and double-click
the module to be changed online to display the "Online module change"
screen.
(b) Click the "Execution" button to enable a module change.
If the following error screen appears, click the "OK" button and perform the
operation in (2)(c) and later.
(c) Check that the RUN LED of the module is off, disconnect the external
cable, and remove the module.
POINT
(1) If the terminal block is removed, the measured temperature may vary within the
accuracy range due to the individual differences of the cold junction temperature
compensation resistors (for the thermocouple input only).
(2) Do not forget to remove the module. If the installation confirmation is executed
without removing the module, the module does not start up properly and the
RUN LED does not turn on.
MELSEC-Q
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